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Matter, unity

The possibility that the rate of reaction of benzene is affected by the phenomenon of reaction at the encounter rate is a matter of importance, because benzene is the datum relative to which comparisons of reactivity are made. Up to 68 % sulphuric acid the slope of a plot of log [kffi moU s i) against — + log is unity for data relating to 25 °C, and... [Pg.28]

In all other cases the observed result will depend upon both the speed of mixing and the speed of nitration. The relative rate will be greater than unity by an amount peculiar to the conditions of the experiment. Again, if the alkylbenzene is sufficiently reactive to be nitrated upon encounter, whilst benzene is not, the relative rate will be greater than unity and, for the experimental conditions, will be a limiting upper value no matter what aromatic is used. [Pg.65]

Since the 0 s are fractions, the logarithms in Eq. (8.38) are less than unity and AGj is negative for all concentrations. In the case of athermal mixtures entropy considerations alone are sufficient to account for polymer-solvent miscibility at all concentrations. Exactly the same is true for ideal solutions. As a matter of fact, it is possible to regard the expressions for AS and AGj for ideal solutions as special cases of Eqs. (8.37) and (8.38) for the situation where n happens to equal unity. The following example compares values for ASj for ideal and Flory-Huggins solutions to examine quantitatively the effect of variations in n on the entropy of mixing. [Pg.517]

Owing to the stability of the uranyl carbonate complex, uranium is universally present in seawater at an average concentration of ca. 3.2/rgL with a daughter/parent activity ratio U) of 1.14. " In particulate matter and bottom sediments that are roughly 1 x 10 " years old, the ratio should approach unity (secular equilibrium). The principal source of dissolved uranium to the ocean is from physicochemical weathering on the continents and subsequent transport by rivers. Potentially significant oceanic U sinks include anoxic basins, organic rich sediments, phosphorites and oceanic basalts, metalliferous sediments, carbonate sediments, and saltwater marshes. " ... [Pg.43]

The first equation expresses a scaling idea as in Eq. (18), introducing the arbitrary factor 2/3 instead of unity for numerical convenience—the problem of statistical accuracy becomes easier, and numerical prefactors should not matter in statistical considerations. [Pg.579]

The rate of copolymerization in a binary system depends not only on the rates of the four propagation steps but also on the rates of initiation and termination reactions. To simplify matters the rate of initiation may be made independent of the monomer composition by choosing an initiator which releases primary radicals that combine efficiently with either monomer. The spontaneous decomposition rate of the initiator should be substantially independent of the reaction medium, as otherwise the rate of initiation may vary with the monomer composition. 2-Azo-bis-isobutyronitrile meets these requirements satisfactorily. The rate Ri of initiation of chain radicals of both types Ml and M2 is then fixed and equal to 2//Cd[7], or twice the rate of decomposition of the initiator I if the efficiency / is equal to unity (see Chap. IV). The relative proportion of the two types of chain radicals created at the initiation step is of no real importance, for they wall be converted one into the other by the two cross-propagation reactions of the set (1). Melville, Noble, and Watson presented the first complete theory of copolymerization suitable for handling the problem of the rate. The theory was reduced to a more concise form by Walling, whose procedure is followed here. [Pg.199]

Finally, no matter how the organisation arose, it has to be related to the restricted and controlled pathways, new and old, and they must be autocatalytic since their active species, proteins, are made from their own substrates or ions. There is a unity of purpose in the cell to aid survival. [Pg.291]

Alchemical thinking helped lead the Society to interpret the implications of modem atomic theory in a way that emphasized the unity of matter (and even of energy) that saw oneness, rather than disunity and distinctness, as a major substratum of atomic theory and that pushed to spiritualize this principle. This grasping for ever simpler and more basic unity is, of course, not so uncommon an impulse in twentieth-century physics. (Consider unified field theories, and even the Theory of Everything in more recent physics.) Alchemy allowed the scientists and Hermeticists of the Alchemical Society to re-enchant science by positing the origins of the modem scientific push for unity in ancient Hermetic spirituality. [Pg.63]

This formula defines the Einstein addition law for parallel velocities. It shows that, no matter how closely P and (3 approach unity f3" can never exceed unity. In this sense c can be considered to be the ultimate speed allowed by special relativity. [Pg.151]

In the last section we have constantly referred to an orthogonalised basis and yet made no specific proposals for the generation of such a basis. We now take up this matter. If a matrix V transforms the overlap matrix S to unity in the equation... [Pg.62]

Table 2. Composition of electrically and color neutral mixed phases, corresponding quark number chemical potentials and average baryon number densities pB = n/3 in unities of nuclear matter saturation density po = 0.17/fm3. The various components are defined in Tab. 1. Table 2. Composition of electrically and color neutral mixed phases, corresponding quark number chemical potentials and average baryon number densities pB = n/3 in unities of nuclear matter saturation density po = 0.17/fm3. The various components are defined in Tab. 1.
Figure 11. The Paths of Concealed Glory, the so-called Invisible Paths, are hidden from those who have not yet seen the Unity, revealed by the omnipresence of the First Matter. Figure 11. The Paths of Concealed Glory, the so-called Invisible Paths, are hidden from those who have not yet seen the Unity, revealed by the omnipresence of the First Matter.
Organic-Phase Nondealities. To assess the impact of nonideality in the organic matter, we assume for illustrative purposes that Yw/oc w e9uals unity. Consequently, Equation 14 simplifies to... [Pg.197]

The first premise is that we risk overlooking the crux of a scientific discipline if we do not understand the discipline s values and problems. These provide a unity that no merely institutional history can explain. The second premise is that a programmatic conceptual core of chemical thought from the eighteenth century through the twentieth century was what I call the problem of the dynamics of matter (What holds a substance together What makes it change ). An early expression for this problem of dynamics was the concept of "chemical affinity."... [Pg.23]

Here it was found that the tunneling factor k is very close to unity. However this result is uncertain because the magnitude of k is sensitive to the choice of the potential energy surface which is not as well established for reaction 6.20 as it is for 6.6. For that matter, learning whether a given reaction rate is significantly influenced by tunneling either on the basis of theory or experiment is not a trivial problem as will be pointed out in further discussion. [Pg.198]


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